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https://www.readbyqxmd.com/read/28938207/zinc-oxide-nanoparticles-in-predicted-environmentally-relevant-concentrations-leading-to-behavioral-impairments-in-male-swiss-mice
#1
Joyce Moreira de Souza, Bruna de Oliveira Mendes, Abraão Tiago Batista Guimarães, Aline Sueli de Lima Rodrigues, Thales Quintão Chagas, Thiago Lopes Rocha, Guilherme Malafaia
Although the potential neurotoxic effects from the exposure to zinc oxide nanoparticles (ZnO NPs) on humans and on experimental models have been reported in previous studies, the effects from the exposure to environmentally relevant concentrations of them remain unclear. Thus, the aim of the present study is to investigate the effects from the exposure to environmentally relevant concentrations of ZnO NPs on the behavior of male Swiss mice. The animals were daily exposed to environmentally relevant concentrations of ZnO NPs (5...
September 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28931086/re-evaluation-of-the-interrelationships-among-the-behavioral-tests-in-rats-exposed-to-chronic-unpredictable-mild-stress
#2
Congli Hu, Ying Luo, Hong Wang, Shengnan Kuang, Guojuan Liang, Yang Yang, Shaoshan Mai, Junqing Yang
The chronic unpredictable mild stress model of depression has been widely used as an experimental tool to investigate human psychopathology. Our objective was to provide an update on the validity and reliability of the chronic unpredictable mild stress model, by analyzing the interrelationships among the indexes using stepwise discriminant analysis and Pearson correlation coefficient to examine the possible combinations. We evaluated the depressive rats in both the presence and the absence of chronic unpredictable mild stress, using weight change, percentage of sucrose preference, coat state, splash test, open-field test, elevated plus-maze test, forced swimming test, and Morris water maze test...
2017: PloS One
https://www.readbyqxmd.com/read/28927999/swimming-induced-pulmonary-oedema-an-uncommon-condition-diagnosed-with-pocus-ultrasound
#3
Joaquín Valle Alonso, Motiur Chowdhury, Raju Borakati, Upali Gankande
Swimming Induced Pulmonary Edema, or SIPE, is an emerging condition occurring in otherwise healthy individuals during surface swimming or diving that is characterized by cough, dyspnea, hemoptysis, and hypoxemia. It is typically found in those who spend time in cold water exercise with heavy swimming and surface swimming, such as civilian training for iron Man, triathalon, and military training. We report the case of a highly trained young female swimmer in excellent cardiopulmonary health, who developed acute alveolar pulmonary oedema in an open water swimming training diagnosed in the emergency department using POCUS ultrasound...
September 16, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28861774/doxycycline-used-for-control-of-transgene-expression-has-its-own-effects-on-behaviors-and-bcl-xl-in-the-rat-hippocampus
#4
G T Shishkina, D A Lanshakov, A V Bannova, T S Kalinina, N P Agarina, N N Dygalo
Doxycycline (Dox)-inducible transgenic approach is used to examine the neural mechanisms of anxiety and depression; however, its own effects on related behaviors are not clear. To address this, in the present study, we tested the anxiety- and depression-like behaviors in rats treated with Dox in drinking water (2 mg/ml) in the elevated plus-maze (EPM; on day 5) and forced swim (FST; on day 8) tests, respectively. In addition, the levels of mRNAs and proteins of brain-derived neurotrophic factor (BDNF) and anti-apoptotic protein Bcl-xL in the hippocampus (HIPP) and frontal cortex (FC) were also analyzed...
August 31, 2017: Cellular and Molecular Neurobiology
https://www.readbyqxmd.com/read/28833689/cold-water-immersion-kill-or-cure
#5
M J Tipton, N Collier, H Massey, J Corbett, M Harper
What is the topic of this review? This is the first review to look across the broad field of 'cold water immersion' and to determine the threats and benefits associated with it as both a hazard and a treatment. What advances does it highlight? The level of evidence supporting each of the areas reviewed is assessed. Like other environmental constituents, such as pressure, heat and oxygen, cold water can be either good or bad, threat or treatment, depending on circumstance. Given the current increase in the popularly of open cold water swimming, it is timely to review the various human responses to cold water immersion (CWI) and consider the strength of the claims made for the effects of CWI...
August 23, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28828210/short-and-long-term-antidepressant-effects-of-ketamine-in-a-rat-chronic-unpredictable-stress-model
#6
Yinghong Jiang, Yiqiang Wang, Xiaoran Sun, Bo Lian, Hongwei Sun, Gang Wang, Zhongde Du, Qi Li, Lin Sun
OBJECTIVE: This research was aimed to evaluate the behaviors of short- or long-term antidepressant effects of ketamine in rats exposed to chronic unpredictable stress (CUS). BACKGROUND: Ketamine, a glutamate noncompetitive NMDA receptor antagonist, regulates excitatory amino acid functions, such as anxiety disorders and major depression, and plays an important role in synaptic plasticity and learning and memory. METHODS: After 42 days of CUS model, male rats received either a single injection of ketamine (10 mg/kg; day 43) or 15 daily injections (days 43-75)...
August 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28811019/introducing-a-new-and-rapid-microextraction-approach-based-on-magnetic-ionic-liquids-stir-bar-dispersive-liquid-microextraction
#7
Alberto Chisvert, Juan L Benedé, Jared L Anderson, Stephen A Pierson, Amparo Salvador
With the aim of contributing to the development and improvement of microextraction techniques, a novel approach combining the principles and advantages of stir bar sorptive extraction (SBSE) and dispersive liquid-liquid microextraction (DLLME) is presented. This new approach, termed stir bar dispersive liquid microextraction (SBDLME), involves the addition of a magnetic ionic liquid (MIL) and a neodymium-core magnetic stir bar into the sample allowing the MIL coat the stir bar due to physical forces (i.e., magnetism)...
August 29, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28810562/anti-depressant-like-effects-of-jieyu-chufan-capsules-in-a-mouse-model-of-unpredictable-chronic-mild-stress
#8
Hui Zhao, Bingyu Liang, Linjie Yu, Yun Xu
Jieyu chufan (JYCF) is a well-known Chinese traditional medicine used for depression; however, the molecular mechanism underlying its anti-depressant action has remained elusive. In the present study, the anti-depressant effects of JYCF and the potential mechanisms were investigated in a mouse model. Five groups of 12 C57BL/6 mice each were used in the study, including a normal control group (NC group), a model control group (MC group) and three groups, which received different doses of JYCF (1.25, 2.5 and 5 g/kg) orally for 21 days (JYCF groups)...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28774617/monitoring-and-factors-affecting-levels-of-airborne-and-water-bromoform-in-chlorinated-seawater-swimming-pools
#9
Jean-Luc Boudenne, Julien Parinet, Carine Demelas, Tarek Manasfi, Bruno Coulomb
Water and air quality of eight seawater swimming pools using chlorine disinfection was measured during four sampling campaigns, spread on one full-year, and in four thalassotherapy centers located in Southeast of France. Concentrations of trihalomethanes (THMs) in air and in water as well as concentrations of parameters, including nonpurgeable organic carbon (NPOC), free residual chlorine (Clf), pH, Kjeldhal Nitrogen (KN), salinity, conductivity, bromide ions and, water and air temperature, were measured. Water and air samples were collected in triplicates morning - at the opening of the pools -, noon and night - at the closing of the pools -, in summer and winter...
August 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28756389/sports-injury-and-illness-incidence-in-the-rio-de-janeiro-2016-olympic-summer-games-a-prospective-study-of-11274-athletes-from-207-countries
#10
Torbjørn Soligard, Kathrin Steffen, Debbie Palmer, Juan Manuel Alonso, Roald Bahr, Alexandre Dias Lopes, Jiri Dvorak, Marie-Elaine Grant, Willem Meeuwisse, Margo Mountjoy, Leonardo Oliveira Pena Costa, Natalia Salmina, Richard Budgett, Lars Engebretsen
OBJECTIVE: To describe the pattern of injuries and illnesses sustained during the Games of the XXXI Olympiad, hosted by Rio de Janeiro from 5 to 21 August 2016. METHODS: We recorded the daily incidence of athlete injuries and illnesses (1) through the reporting of all National Olympic Committee (NOC) medical teams and (2) in the polyclinic and medical venues by the Rio 2016 medical staff. RESULTS: In total, 11 274 athletes (5089 women, 45%; 6185 men, 55%) from 207 NOCs participated in the study...
September 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28745642/assessing-spatial-memory-impairment-in-a-mouse-model-of-traumatic-brain-injury-using-a-radial-water-tread-maze
#11
Marcella M Cline, Megan A Ostlie, Chloe G Cross, Gregory G Garwin, Satoshi Minoshima, Donna J Cross
Despite the recent increase in use of mouse models in scientific research, researchers continue to use cognitive tasks that were originally designed and validated for rat use. The Radial Water Tread (RWT) maze test of spatial memory (designed specifically for mice and requiring no swimming) has been shown previously to successfully distinguish between controlled cortical impact-induced TBI mice and sham controls. Here, a detailed protocol for this task is presented. The RWT maze capitalizes on the natural tendency of mice to avoid open areas in favor of hugging the sides of an apparatus (thigmotaxis)...
July 17, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28662189/affective-and-cognitive-behavior-in-the-alpha-galactosidase-a-deficient-mouse-model-of-fabry-disease
#12
Lukas Hofmann, Franziska Karl, Claudia Sommer, Nurcan Üçeyler
Fabry disease is an X-linked inherited lysosomal storage disorder with intracellular accumulation of globotriaosylceramide (Gb3) due to α-galactosidase A (α-Gal A) deficiency. Fabry patients frequently report of anxiety, depression, and impaired cognitive function. We characterized affective and cognitive phenotype of male mice with α-Gal A deficiency (Fabry KO) and compared results with those of age-matched male wildtype (WT) littermates. Young (3 months) and old (≥ 18 months) mice were tested in the naïve state and after i...
2017: PloS One
https://www.readbyqxmd.com/read/28655697/banana-fruit-pulp-and-peel-involved-in-antianxiety-and-antidepressant-effects-while-invigorate-memory-performance-in-male-mice-possible-role-of-potential-antioxidants
#13
Noreen Samad, Aqsa Muneer, Najeeb Ullah, Aqal Zaman, M Mazhar Ayaz, Ijaz Ahmad
The present study was aimed to investigate the anti-stress and memory enhancing effects of banana (Musa sapientum L.) fruit pulp and peel extract in male mice. Locally bred albino Wistar mice were divided into control and 2 test groups (n=10). Control rats received drinking water while test groups were treated with banana fruit pulp (600 mg/kg; oral administration) and extract of banana peel (400mg/kg; oral administration). Behavioral activities of animals were monitored 14 days post administration of banana pulp and peel extract...
May 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28637659/enduring-effects-of-perinatal-nicotine-exposure-on-murine-sleep-in-adulthood
#14
Jeremy Charles Borniger, Reuben F Don, Ning Zhang, Robert Thomas Boyd, Randy J Nelson
The long-term consequences of early life nicotine exposure are poorly defined. Approximately 8-10% of women report smoking during pregnancy, and this may promote aberrant development in the offspring. To this end, we investigated potential enduring effects of perinatal nicotine exposure on murine sleep and affective behaviors in adulthood (~13-15 weeks of age) in C57Bl6j mice. Mothers received a water bottle containing 200 µg/ml nicotine bitartrate dihydrate in 2% w/v saccharin or pH-matched 2% saccharin with 0...
June 21, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28632299/simningsorsakat-lung%C3%A3-dem-vid-svenska-f%C3%A3-rh%C3%A3-llanden-otillr%C3%A3-ckligt-studerat-erfarenheter-fr%C3%A3-n-vansbrosimningen-2016
#15
Annika Braman Eriksson, Martin Annsberg, Maria Hårdstedt
Swimming-induced pulmonary edema (SIPE) has been described in sports and military medicine during strenuous swimming in open water. Symptoms include dyspnea, cough, frothy mucus and hemoptysis. Hypertension, a tight wetsuit, overhydration and previous episodes of SIPE are suggested risk factors. Immediate interruption of swimming prevents more serious symptoms. In the open water race at Vansbro 2016, 69 swimmers (of 13,878 in total) were treated for symptoms suspected for SIPE. Continuous positive airway pressure (CPAP) was successfully used to treat suspected SIPE in 46 patients in the on-site emergency care center...
June 20, 2017: Läkartidningen
https://www.readbyqxmd.com/read/28620151/reproductive-innovation-and-the-recognition-of-a-new-genus-within-the-polystomatidae-monogenea-infecting-chelonian-vertebrates
#16
Richard C Tinsley
Polystomatid monogeneans have a wide diversity of life cycles correlated with the varied ecology and behaviour of their aquatic vertebrate hosts. Typically, transmission involves a swimming infective larva but most hosts are amphibious and invasion is interrupted when hosts leave water. A key life cycle adaptation involves a uterus that, in the most specialised cases, may contain several hundred fully-developed larvae prepared for instant host-to-host transmission. By contrast, one subfamily of the Polystomatidae - the Polystomoidinae, specific to chelonians (freshwater turtles) - has a simplified reproductive system without a uterus...
June 7, 2017: Folia Parasitologica
https://www.readbyqxmd.com/read/28566681/dimethyl-sulfide-is-a-chemical-attractant-for-reef-fish-larvae
#17
Matthew A Foretich, Claire B Paris, Martin Grosell, John D Stieglitz, Daniel D Benetti
Transport of coral reef fish larvae is driven by advection in ocean currents and larval swimming. However, for swimming to be advantageous, larvae must use external stimuli as guides. One potential stimulus is "odor" emanating from settlement sites (e.g., coral reefs), signaling the upstream location of desirable settlement habitat. However, specific chemicals used by fish larvae have not been identified. Dimethyl sulfide (DMS) is produced in large quantities at coral reefs and may be important in larval orientation...
May 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28533550/coral-larvae-are-poor-swimmers-and-require-fine-scale-reef-structure-to-settle
#18
Tom Hata, Joshua S Madin, Vivian R Cumbo, Mark Denny, Joanna Figueiredo, Saki Harii, Christopher J Thomas, Andrew H Baird
Reef coral assemblages are highly dynamic and subject to repeated disturbances, which are predicted to increase in response to climate change. Consequently there is an urgent need to improve our understanding of the mechanisms underlying different recovery scenarios. Recent work has demonstrated that reef structural complexity can facilitate coral recovery, but the mechanism remains unclear. Similarly, experiments suggest that coral larvae can distinguish between the water from healthy and degraded reefs, however, whether or not they can use these cues to navigate to healthy reefs is an open question...
May 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28490880/protective-efficacy-of-a-single-salvianolic-acid-a-treatment-on-photothrombosis-induced-sustained-spatial-memory-impairments
#19
Chun-Xiang Jiao, Heng Zhou, Chun-Xian Yang, Chen Ma, Yue-Xiong Yang, Rong-Rong Mao, Lin Xu, Qi-Xin Zhou
With respect to the high burden of ischemic stroke and the absence of pharmacological treatment for promoting rehabilitation, promising candidates with specific effects on long-term functional recovery are highly desired. Candidates need reasonable experimental paradigms to evaluate the long-term functional outcome focused on ischemia-induced sensorimotor and memory deficits. "Danshen", a traditional Chinese herb, has long been used to treat coronary and cerebral vascular diseases as well as dementia. Salvianolic acid A (SAA), one of the major active ingredients of Danshen, was demonstrated to be effective in protecting against cerebral ischemic injury...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28489717/coliphages-and-gastrointestinal-illness-in-recreational-waters-pooled-analysis-of-six-coastal-beach-cohorts
#20
Jade Benjamin-Chung, Benjamin F Arnold, Timothy J Wade, Kenneth Schiff, John F Griffith, Alfred P Dufour, Stephen B Weisberg, John M Colford
BACKGROUND: Coliphages have been proposed as indicators of fecal contamination in recreational waters because they better mimic the persistence of pathogenic viruses in the environment and wastewater treatment than fecal indicator bacteria. We estimated the association between coliphages and gastrointestinal illness and compared it with the association with culturable enterococci. METHODS: We pooled data from six prospective cohort studies that enrolled coastal beachgoers in California, Alabama, and Rhode Island...
September 2017: Epidemiology
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